A sketch by notorious London gangster Reggie Kray has sold at auction for £1,320.

The pen and crayon sketch shows a lone cowboy in a desert with the phrase "stay strong" and is signed by the East End villain after he finished it in 1999.

Drawn on an A4 piece of paper, the sketch shows the grey suited cowboy wearing stetson and a twin holster set above the words: "God Bless, Reg Kray".

The drawing was signed by the late gangster and was one of dozens of items from the notorious criminal and his brother that have gone under the hammer.

Also sold was Reggie's gold watch which was worn by Tom Hardy in the number one movie Legend. It fetched £10,200 while a total of 62 other items raised a further £2,000.

Drawing: The sketch by Reggie Kray of a cowboy called ''Stay Strong'' which as sold for £1,300 at auction (Image: Cavendish Press)

Previously unseen birthday and Christmas cards sent by Reggie Kray to twin bother Ronnie as they were serving life in jail for murder sold for hundred of pounds.

In one birthday card, which sold for £132, Reg jokes to Ron that he appears to have forgotten the birthday they both share before signing off; ''Enjoy yourself.''

The auction at Northwich Auctions in Cheshire also saw go under the hammer a sign that used to be on Reggie's cell door at Lewis Prison in the 1980s that read: "Knock before entering - or f*** off!" It went for £132.

Dozens of letters on headed 'Kray Twins' notepaper sold for around £100 although Reg's writing is virtually illegible. A letter from a probation officer sent to Reg in 1993 when he was applying for early parole urges him not to shed 'crocodile tears' over the murder of Jack 'The Hat' McVitie also went for around £100.

Rare: This mugshot of Reggie Kray sold for hundreds of pounds (Image: Cavendish)

An autopsy report on Ronnie who died on 17 March 1995 of a heart attack, aged 61, sold for £192 but Ronnie's denture mouldings failed to sell.

The items were being sold by an anonymous collector who was an acquaintance of Reggie. Many of the items were used as background material by those working on the recent movie.

Auctioneer Peter Critchley, of Northwich Auction in Cheshire, said the ultra-rare nature of the items meant that there had been huge interest in the sale.

He said: "Whatever your views on the Kray this gave people the chance to own a little bit of history. There were some very unique items for sale.

Sold: Reggie Kray's gold watch, with a still from the film Legend with Tom Hardy wearing it in the scene (Image: Cavendish Press)

"The Christmas cards offer a fascinating insight into the relationship between the brothers. They are brief and the handwriting is almost illegible but they are so unique.

"The handwriting is almost unreadable in most of the correspondence. I think he was more adept with knuckle dusters than with a pen and ink.

"The watch is the item we expected to fetch the highest price and that proved right. It was worn by Reggie when he was interviewed by the BBC Pannorama programme in 2004 just before he died.

"The watch was also worn by Tom Hardy in the new Krays movie. It is 18 carat gold and features a diamond bezel.

“The Krays were very much part of the most exciting decade of the 20th century, and we were very pleased to get the items for the auction.

Legend: Tom Hardy appeared as Reggie Kray in the hit film about the twins' lives (Image: Photoshot)

“The estimate on the watch would have probably been about £4,000 had it not been for its link with the Krays, and it did no harm to its estimate having been worn by Tom Hardy in the new film about the Krays.

"There were hundreds of people in the room for the auction and the same on the website, where most of the bids were received."

No details on any of the buyers have been released.

Reggie served more than the recommended 30 years he was sentenced to in March 1969 and was freed from Wayland on 26 August 2000 on compassionate grounds for having inoperable bladder cancer. He died on October 1 2000 aged 66.